I used it with my DD. We went really slowly, and I'm sure that there are other programs that are more comprehensive, but this was a free one that gave us a start. I never really got into using any workbook or anything in conjunction with it, but that was because DD is not as interested and I didn't want to push it.
So, as to the review part, I liked it, DD liked learning to read, but it's pretty sparse. It gave me a framework, which was just what I needed. I figured something free couldn't hurt and could give us a start (DD isn't even 5 yet, wanted to read, and I hadn't researched any other options.) Good luck!